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Taiwan Semiconductor Corporation 1.5KE6.8C
- Part No.:
- 1.5KE6.8C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE6.8C.pdf
- Description:
- 1500W, 6.8V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,678
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Product details
Overview
1.5KE6.8C from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 6.8V, clamping voltage of 10.8V at 145A peak pulse current, and a working stand-off voltage of 5.5V - enabling robust ESD and surge immunity in automotive and industrial control systems.
For engineers reviewing the 1.5KE6.8C datasheet, 1.5KE6.8C pinout, 1.5KE6.8C application, or 1.5KE6.8C equivalent, key selection criteria include its DO-201 package compatibility, 10.8V clamping performance under 10/1000μs surge, AEC-Q101 qualification status, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and inductive switching transients.
Technical Context
The 1.5KE6.8C operates as a silicon avalanche diode with unidirectional polarity, activated when reverse voltage exceeds its 6.12–7.48V breakdown range at 10mA test current. Its low dynamic impedance and sub-1ps response time ensure rapid clamping of fast transients before downstream ICs are damaged.
It delivers 1500W peak pulse power per 10/1000μs waveform, with maximum leakage current <1μA above 10V and junction temperature rating up to +175°C - supporting operation in high-ambient environments such as engine compartments and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=10mA | 6.12–7.48V - defines precise turn-on threshold for reliable overvoltage triggering |
| VWM | 5.5V - maximum continuous DC operating voltage without leakage activation |
| VC @ IPP=145A | 10.8V - clamped voltage during full 1500W surge, limiting stress on protected ICs |
| PPK | 1500W - peak surge handling capability per standard 10/1000μs waveform |
| IPP | 145A - maximum non-repetitive surge current it can divert without failure |
| Junction Temp Range | −55°C to +175°C - enables deployment in under-hood automotive and industrial power electronics |
| Leakage @ VWM | <1μA - ensures minimal standby power loss and signal integrity in always-on circuits |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; RoHS-compliant, halogen-free molding compound; UL 94V-0 rated; pure tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; conducts during forward surge events |
| Cathode | Protected line input | Connected to rail or signal line being safeguarded; avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network pulses) |
| Low dynamic impedance | Enables tighter clamping margin and faster energy diversion during multi-kW surges |
| Fast response time | <1.0ps rise time from 0V to VBR - critical for protecting high-speed logic and microcontrollers against ESD |
| DO-201 mechanical robustness | 0.090g mass, 0.6"×0.6" copper pad thermal derating support, and JESD201 Class 2 whisker resistance |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump and alternator ripple in passenger vehicles. IC Role / Device Role / Timing Role: Primary TVS clamp placed upstream of LDOs and CAN transceivers to absorb >100V transients. Use Value: Limits rail voltage to ≤10.8V during 1500W surges, preventing latch-up or gate oxide damage in downstream 5V/3.3V logic. | Use Scenario: 4–20mA current loop sensors in factory automation subject to cable-induced EFT bursts. IC Role / Device Role / Timing Role: Unidirectional shunt protector across sensor supply pins to suppress fast transients before analog front-end amplifiers. Use Value: Clamps 5kV ESD events within 1ps while maintaining <1μA leakage at 5.5V, preserving measurement accuracy. |
| LED Driver Overvoltage Clamp | DC Motor Control Board Surge Suppression |
Use Scenario: Constant-current LED drivers powered from 24V industrial supplies prone to switching noise. IC Role / Device Role / Timing Role: Standoff protection device parallel to driver IC input, triggered only during overvoltage faults. Use Value: Prevents catastrophic failure of MOSFET gate drivers by clamping transients to 10.8V before VGS rating is exceeded. | Use Scenario: H-bridge motor controllers experiencing inductive kickback during PWM commutation. IC Role / Device Role / Timing Role: Bidirectional-capable variant (1.5KE6.8CA) used across motor terminals; 1.5KE6.8C applied on logic-side supply rails. Use Value: Absorbs 145A peak current from 10/1000μs inductive spikes, reducing PCB-level voltage overshoot by >85%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Lower peak power (600W), SMC package, 11.2V clamping at 53.3A | Not AEC-Q101 qualified; limited to consumer/industrial use | Choose when space-constrained layouts require surface-mount and 1500W rating is not required |
| 1N6267 | JEDEC-registered equivalent part number; identical electrical specs and DO-201 package | No functional difference - same device, alternate naming convention | Select for legacy BOM alignment where JEDEC part numbers are mandated |
Compared with SMBJ6.8A and 1N6267, the 1.5KE6.8C uniquely combines AEC-Q101 qualification, 1500W surge capacity, and DO-201 through-hole mechanical stability - making it the preferred choice for automotive power distribution modules and high-reliability industrial controllers where long-term thermal cycling and vibration resistance are critical.
Availability
1.5KE6.8C is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and DC motor controller surge suppression requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE6.8C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs - with global manufacturing and quality certifications including IATF 16949.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust thermal performance in DO-201 packaging.
FAQ
What is the clamping voltage of the 1.5KE6.8C under maximum surge conditions?
The 1.5KE6.8C has a maximum clamping voltage (VC) of 10.8V at 145A peak pulse current (IPP) under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and ensures downstream components see no more than 10.8V during a full 1500W transient event - a critical parameter for protecting 5V or 3.3V logic interfaces. The 1.5KE6.8C maintains this clamping performance across its specified junction temperature range.
Is the 1.5KE6.8C suitable for automotive applications?
Yes, the 1.5KE6.8C is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements - making it suitable for automotive power rail and signal line protection. Its −55°C to +175°C junction temperature range, DO-201 mechanical robustness, and validated reliability testing confirm its readiness for under-hood and body-control module deployments. The 1.5KE6.8C is explicitly listed in TSC's automotive-grade product portfolio.
How does the 1.5KE6.8C differ from the 1.5KE6.8CA variant?
The 1.5KE6.8C is unidirectional, with cathode marking indicating polarity-sensitive placement across positive rails to ground. The 1.5KE6.8CA is bidirectional - functionally two anti-series diodes - enabling symmetric clamping for AC-coupled signals or floating bus lines. Both share identical VBR, VC, and PPK ratings, but the 1.5KE6.8C must be oriented correctly in-circuit, whereas the 1.5KE6.8CA has no polarity dependency. The 1.5KE6.8C is not interchangeable with the 1.5KE6.8CA without layout revision.
What is the maximum leakage current of the 1.5KE6.8C at its working voltage?
The 1.5KE6.8C exhibits a maximum blocking leakage current (ID) of 1000μA at its working stand-off voltage (VWM) of 5.5V, per the datasheet's Electrical Specifications table. However, typical leakage is <1μA above 10V - meaning at 5.5V, actual leakage is well below 1μA in most units. This ultra-low leakage preserves signal integrity and minimizes standby power loss in always-on automotive modules using the 1.5KE6.8C.
Can the 1.5KE6.8C be used in place of older 1N6267 devices?
Yes - the 1.5KE6.8C is the modern Taiwan Semiconductor replacement for the legacy JEDEC 1N6267 TVS diode, sharing identical electrical specifications, DO-201 package dimensions, pinout, and performance characteristics. TSC explicitly lists 1N6267 as the JEDEC type number for 1.5KE6.8C in its datasheet. No PCB or schematic changes are needed when migrating from 1N6267 to 1.5KE6.8C, and the 1.5KE6.8C offers enhanced manufacturing traceability and updated AEC-Q101 qualification.
1.5KE6.8C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 145A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE6.8C FAQ
1.How can I place an order for 1.5KE6.8C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5KE6.8C reliable?
The price and inventory of 1.5KE6.8C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE6.8C is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8C?
1.5KE6.8C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5KE6.8C?
For technical support, including 1.5KE6.8C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8C requirements.
6.How does Aetrix verify that 1.5KE6.8C is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5KE6.8C meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8C?
All 1.5KE6.8C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5KE6.8C part is unused and in its original packaging.
Return procedure for 1.5KE6.8C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8C Tags
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